This part exclusively uses those Drop D power chords that we discussed in the previous lesson.
One important thing to note here, is my left hand. Besides playing the power chords, can you see what else it's doing? It's also muting the strings in between the chords. This is absolutely necessary to have that tight metal rhythm sound. So every time you see a 16th note rest in the tab below, slap your fret-hand fingers on the strings to mute them.